جزئیات آسیب‌پذیری
CVE-2026-46316
KVM: arm64: vgic-its: Drop the translation cache reference only for the erased entry
شرح رسمی (انگلیسی)
In the Linux kernel, the following vulnerability has been resolved: KVM: arm64: vgic-its: Drop the translation cache reference only for the erased entry vgic_its_invalidate_cache() walks the per-ITS translation cache with xa_for_each() and drops the cache's reference on each entry with vgic_put_irq(). It puts the iterated pointer, though, rather than the value returned by xa_erase(). The function is called from contexts that do not exclude one another: the ITS command handlers hold its_lock, the GITS_CTLR write path holds cmd_lock, and the path that clears EnableLPIs in a redistributor's GICR_CTLR holds neither. Two or more of them can drain the same cache concurrently, and if each one observes the same entry, erases it and then puts it, the single reference the cache holds on that entry is dropped more than once. The entry can then be freed while an ITE still maps it. xa_erase() is atomic and returns the previous entry, so put only the entry that this context actually removed. The cache reference is then dropped exactly once per entry even when the invalidations run concurrently, and the behavior is unchanged when only one context runs.
امتیازهای CVSS
| امتیاز | نسخه | منبع | بردار |
|---|---|---|---|
| 9.3بحرانی | 3.1 | CVEProject cvelistV5 (CNA) (Linux) | CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H |
| 7.0بالا | 3.1 | CVEProject cvelistV5 (CNA) (redhat-SADP) | CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H |
محصولات آسیب‌پذیر
| فروشنده | محصول | نسخه‌ها | منبع |
|---|---|---|---|
| Linux | Linux | 6.10 | CVEProject cvelistV5 (CNA) |
| Linux | Linux | 8201d1028caa4fae88e222c4e8cf541fdf45b821 ≤ v < 2bbc395e81bd29c543a0529a678327e932a7ec69 | CVEProject cvelistV5 (CNA) |
| Linux | Linux | 8201d1028caa4fae88e222c4e8cf541fdf45b821 ≤ v < 9121f4605ab94969f62d1b5714ca3c6c69bd202f | CVEProject cvelistV5 (CNA) |
| Linux | Linux | 8201d1028caa4fae88e222c4e8cf541fdf45b821 ≤ v < b7b72e88046328c9fdc638fe887d4240257dd5dc | CVEProject cvelistV5 (CNA) |
| Linux | Linux | 8201d1028caa4fae88e222c4e8cf541fdf45b821 ≤ v < 13031fb6b8357fbbcded2a7f4cba73e4781ee594 | CVEProject cvelistV5 (CNA) |
| Red Hat | Red Hat Enterprise Linux 9 | همه | CVEProject cvelistV5 (CNA) |
| Red Hat | Red Hat Enterprise Linux for NVIDIA 26 | همه | CVEProject cvelistV5 (CNA) |
منابع و راهنماها
۱۵- https://git.kernel.org/stable/c/b7b72e88046328c9fdc638fe887d4240257dd5dc
- https://git.kernel.org/stable/c/2bbc395e81bd29c543a0529a678327e932a7ec69
- https://git.kernel.org/stable/c/9121f4605ab94969f62d1b5714ca3c6c69bd202f
- https://git.kernel.org/stable/c/13031fb6b8357fbbcded2a7f4cba73e4781ee594
- https://access.redhat.com/security/cve/CVE-2026-46316 vdb-entryx_refsource_REDHAT
- https://bugzilla.redhat.com/show_bug.cgi?id=2486982 issue-trackingx_refsource_REDHAT
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-46316.json x_sadp-csaf-vex
- https://access.redhat.com/errata/RHSA-2026:44231 vendor-advisoryx_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2026:40787 vendor-advisoryx_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2026:40779 vendor-advisoryx_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2026:40764 vendor-advisoryx_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2026:39371 vendor-advisoryx_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2026:34911 vendor-advisoryx_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2026:38902 vendor-advisoryx_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2026:36018 vendor-advisoryx_refsource_REDHAT
اطلاعات
- تاریخ انتشار
- ۱۴۰۵/۰۳/۱۹
- آخرین به‌روزرسانی
- ۱۴۰۵/۰۷/۲۷
- وضعیت
- منتشرشده
- صادرکننده (CNA)
- Linux
پیش‌بینی بهره‌برداری (EPSS)
ارزیابی SSVC (CISA)
- قابل خودکارسازی
- خیر
- وضعیت بهره‌برداری
- ندارد
- اثر فنی
- کامل
ضعف‌ها (CWE)
- CWE-911Improper Update of Reference Count
- CWE-362Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')